7 Things to Know About Generic Viagra (Sildenafil)|Article Discussion|Forum|SNES HUB

Sildenafil works by blocking an enzyme in the body called PDE5, which helps relax certain blood vessels. In cases of erectile dysfunction, it increases blood flow to the penis during arousal. This makes it easier to achieve and maintain an erection. In cases of pulmonary arterial hypertension, sildenafil relaxes the blood vessels in the lungs. This reduces blood pressure and reduces stress on the heart.

Viagra is approved for the treatment of erectile dysfunction (ED), also known as impotence, in men. It increases blood flow to the penis after sexual stimulation and allows men to maintain an erection firm enough for intercourse.

Viagra only works after sexual stimulation. It works within 30 to 60 minutes, but can be taken up to four hours before sexual activity.

It may not be suitable for some people, such as those with angina, chest pain, other heart conditions, liver or kidney problems, blood disorders or bleeding, stomach ulcers, certain eye conditions, or a physical deformity of the penis.

It may interact with certain medications, such as some antibiotics and antifungals, herbal remedies, HIV medications, and drugs to treat high blood pressure or prostate problems. Viagra does not offer protection against sexually transmitted diseases.

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